可充电钠离子电池隔膜研究进展

Research Progress on Separator of Rechargeable Sodium-Ion Battery

介绍了可充电钠离子电池的工作机理及其在成本、寿命、安全和大规模储能等方面的优势。简述了隔膜性能对电池的电化学性能、耐用性及安全性的影响。回顾了近几年钠离子电池隔膜的研究进展,包括聚烯烃微孔膜、玻璃纤维膜、聚合物电解质膜、静电纺丝膜、纤维素基隔膜和阳离子交换膜等,并分析了各自的优缺点。讨论了隔膜产业化过程面临的问题尤其是在安全方面面临的挑战,指出电解质润湿性更佳、离子电导率更高、耐枝晶性更强、热稳定性更好是隔膜研究的方向。

The working mechanism of rechargeable sodium-ion batteries was introduced along with their advantages in cost,lifespan,safety,and large-scale energy storage.The impacts of separator performance on the electrochemical performance,durability,and safety of batteries were briefly described.The research progress of sodium ion battery separators in recent years were reviewed,including polyolefin microporous membranes,glass fiber membranes,polymer electrolyte membranes,electrospun membranes,cellulose based membranes,and cation exchange membranes.The respective advantages and disadvantage of respective membranes were analyzed.The problems,especially the safety challenges of separators faced in the industrialization process were discussed.It was pointed out that the research directions of separators were superior electrolyte wettability,higher ion conductivity,stronger dendrite resistance,and better thermal stability.